Learn How to Spot Mate in 1: King Safety
This puzzle is a classic mate in 1 based on king safety and a forced mating net. Even though the position is in the middlegame, the finish has the directness of a chess endgame tactic: one precise check ends the game immediately. The key idea is that the enemy king is exposed and its own pieces restrict escape squares, so a single forcing move can deliver checkmate before any defense is possible.